1. Generally speaking, durian is mature if it cracks. If there are no cracks on the surface of durian, the maturity may not be very good. Of course, when buying durian, don't buy a mature one. This pulp is likely to be polluted and may cause physical discomfort.

2. When buying durian, you must buy durian that has just cracked. This kind of durian is the most suitable.

3. If you want to know whether durian is ripe or not, you can look at the color of durian at this time. Generally speaking, the shell of mature durian is yellow. If it is immature durian, most of it is cyan. When buying it, choose yellow as much as possible.

4. Mature durian smells very fragrant, while immature durian smells just cut. If it smells like alcohol, it means that durian has gone bad.

5. You can also shake durian when buying it. Carefully place your fingers in the depression between the spikes on both sides of durian, gently pick it up, hold it firmly and shake it gently. If you feel a slight collision, this durian is better.

6. In addition, you can also look at the appearance when buying durian. If there are more protruding parts outside, such durian is more suitable for purchase.